Analysis of Chiller without Cooling

Date:Jun 22, 2018

Analysis of Chiller without Cooling

"Chilling machine" is not cooling the cause of the analysis Chillers in the operation process, often in the phenomenon of no cooling, there is no alarm, so that operators can not start, do not know what caused the problem. Shenzhen Hailingke Refrigeration Machinery Co., Ltd. analyzes the reasons for this phenomenon as follows: 1. The refrigerant R22 is not enough, which is what we often call the Freon. During the operation of the chiller, the liquid refrigerant in the evaporator constantly sucks away the heat in the water and begins to evaporate. After the compression of the compressor and throttling of the expansion valve, it turns into a low-temperature and low-pressure refrigerant and enters the evaporator. cycle. If used for too long, the refrigerant will evaporate, which will affect the cooling effect. Another reason is that the refrigerant leaks, which affects refrigeration. Therefore, chiller operators should observe whether the refrigerant is sufficient. In the case of leaky refrigerants, it is advisable to contact the chiller manufacturer to arrange for personnel to leak leaks and supplement sufficient refrigerants. 2. The condenser is not cleaned for a long time. The condenser is one of the main components of the chiller. Most of the cooling water contains calcium, magnesium ions and acid carbonates. Carbonate formation occurs when cooling water flows through the metal surface. In addition, oxygen dissolved in cooling water can also cause metal corrosion and rust formation. Due to the generation of rust, the heat transfer effect of the condenser is reduced. If the fouling is severe, the tube will be clogged and the heat exchange effect will be lost, thus affecting the cooling effect. Therefore, it is recommended that the condenser be cleaned every six months. 3, dry filter plugging. When the filter is clogged, the heat transfer effect of the condenser is affected, and the cooling effect of the entire machine is not good. Therefore, regular inspection and cleaning of the filter are required. When the clogging is serious, it is recommended to replace the new dry filter. 4. There is too much impurity in tap water and it adheres to the inner wall of the water pipe, causing insufficient water supply, thus affecting the cooling effect. Therefore, for areas with poor water quality, it is recommended to do water treatment works or regular cleaning and replacement of water pipes to ensure the normal operation of chilled water. In addition, the chiller selection must be accurate. If the model is not in place, the cooling effect will not be achieved. It is recommended that when customers purchase chillers, they will provide the required cooling capacity and other parameters to chiller manufacturers, discuss and obtain chiller models, determine chiller installation plans, achieve a predetermined cooling effect, and increase production efficiency. purpose. I hope that we can help the majority of users to solve the problem as soon as possible and restore the daily use of chillers.

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